Device for cleaning flues



(No Model.) f

-W. ,DUNDIL DEVICE FOR LBANINGPLUES, DRAINS, UR PIPES.

No. 492,393. Y Patented Feb. 28, 1893.

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UNTTED STATES PATENT OFFICE.

WILLIAM DUNDON, OF LEAVENWORTH, KANSAS.

DEVICE FOR CLANING FLUES, DRAINS, OR PIPES.

SPECIFICATION forming part of Letters Patent N0. 492,393, dated February 28, 1893. Application filed April l2, 1892. Serial No. 428,922. (No model.)

To all whom it may concern: l

Beit known that I, WILLIAM DUNDON, a citizen of the United States, residing at Leavenworth city, in the county of Leavenworth and -State of Kansas, have invented a new and useful device for the purpose of cleaning iues, drains, or pipes, but more especially steam-boiler iiues, thereby retaining nearer the full power of the heat used, of which the following is a speeication.

The object of my invention is to produce a simple, cheap and efficient device for cleaning iiues, drains or pipes, and also to make the said device capable of expansion while in a boiler, flue, or pipe, also to allow the expansible part to be set and held at any desired` circumference. l attain these objects as hereinafter set forth, pointed out in my claims and illustratedin the accompanying drawings, in which,-

Figure l. is an elevation of my complete device. Fig. 2. is a bottom view. Fig. 3. is a longitudinal sectional view taken on the line X--X of Fig. 1. Fig. 4. is aview looking into the cone shaped scraper of my device, with a portion removed. Fig. 5. is a detail perspective View of one of the braces in the interior of the cone shaped scraper.

Similar figures refer to similar parts th rou ghout the several views.

The numeral 1 designates the cone shaped scraper, preferably made of steel, and having an opening, or slot, 2, extending its entire length. A metal strip, 3, is fastened on the inner surface of the cone 1, and to one side of the slot, by means of rivets, 4, 4, and to the other side by a screw, 5, passing through a slot, 6, in the cone 1. y

Directly opposite the slot 2, and to the lower portion of the cone 1, is fastened, preferably by means of screws, 7, a hinge block, 8, which has hinged to it an approximately tre-foil shaped plate, 9. Oneof the arms of this plate is engaged in the hinge block, 8, and the other two arms carry small wheels, or rollers, 10 and 11, that bear against the inner lower surface of the cone 1. This cone is also provided with three or more triangular shaped braces, 12, which are so formed as to allow the rear portions, when turned in opposite directions, to form a plate, 13, for riveting them to the cone 1. The cone is fastened at its upper portion pipe, 17, which at each end is screw threaded on its outer su rface. The lower screw threaded end of the pipe 17 receives a washer, 18, and nut, 19, which, when the nut is tightened, bears against the triangular shaped braces, 12, that come in contact with the coupling pipe 17, and thereby serve to hold the cone 1 in a firm and secure position.

To the upper screw threaded portion of the pipe 17, after it passes through the head 14, is screwed a pipe, 20, which serves as the handle of the device. Its upper portion is screw threaded to receive the cap 21.

Running the entire length in the interior of the pipes 17 and 20, is a rod, 22, which is squared at its lower end, and, passing through a square opening in the plate 9, receives a nut 23. Its upper portion passes through the screw cap 21, andl there receives a nut, 24. The head 14 is prevented from turning on the pipe 17 by passing a small screw, 25, through the side of the head 14, and into a slot 26 in the coupling pipe 17.

The practical operation of my device is as followsz-When the operator desires to clean a iue, pipe, or drain, the cone, the tendency of which is to contract by reason of the spring and resiliency in the metal of said cone, is inserted in the flue or pipe. Then, by unscrewing the cap 21, the rod 22 will be drawn upward, which will in turn draw the triangular plate 9 toward the smaller end of the cone until the wheels, or rollers, 10, bear against the side of the cone 1, and cause it to enlarge in diameter until it fits the liue, or pipe, it is in. Then, by running the device backward and forward in the usual manner, all soot incrustations, che., can be easily removed. The strip, 4, entirely closes the slot 2, and thereby forms a complete cutting, or scraping, edge on the cone.

In cleaning boiler iues, or pipes, of all the same diameter, the cone can be set to the proper size by tightening the screw 5. By screwing onextra lengths of the pipe 20 and rod 22, the handle can be easily and quickly IOO lengthened. Should the incrustations in a pipe or drain be of such a nature as to not be easily removed by simply pushing the cone backward and forward, the said cone can be driven in by repeated blows of a hammer on the cap 21.

Having thus described my invention, what I claim as new and useful, and desire to secure by Letters Patent, is-

1. A flue or pipe cleaner, comprising a cone shaped body-portion, an expansion device hinged at one. side to theinner side of the cone, and also having radially arranged rollers in its periphery engaging. the inner wall of the cone shaped body portion, and a rod extending longitudinally and centrally through the cone shaped headand longitudinally adjustable therein, and connected at. its lower end tothe expansion device to actuate the same, substantially as described.

2. Ina flu-eer pipecleaner,.the combination pansion device. capabl'eof being operated by v of aA cnnefsh-aped; body-portion with a. pipe exteriorly threaded at its lower end andi extending longitudinally and centrally of said nut` 19 and Washerv 18x engaging the lower i one side, said slot being closed by a strip fastened to one side of said slot, the other side of said strip being held*` by a screw running through a slot in said cone, said cone shaped scraper being held in a head which head iisscrewed on a coupling pipe, triangular L shaped braces adapted to be screwed to the inner side of said cone and bear against the coupling pipe, a handle screwed to the upper end of said coupling pipe, and having ascrew threaded cap, and an expansion device, consisting of a tre-foil shaped plate, hinged to the-inner sideof the conical; scraper and carrying wheels or rollers, and a rod running the entire, length of the device, saideX- '.the movements ot` the cap, all substantially as described, in the manner settort'h, and for the purposes stated.

WILLIAM DUNDON. Witnesses:

JAMES GRAY, C; FLORA. 

